Carbureter.



u MTED sTATns PATENT OFFICE.

JACOB MATTHIAS LOFTHOUSE AND EMILY ROSALIE BOOTY, or restart, WESTERNAUSTRALIA, AUSTRALIA.

CARBURETER.

To all whom it may concern:

Be it known that we, JAcoB MAr'rinAs LorTHoUsn and EMILY Rosanna BOOTY,subjects of the King of Great Britain, residing at Perth, WesternAustralia, and Commonwealth of Australia, have invented certain new anduseful Improvements in Carbureters, of which the following is aspecification.

()ur invention relates to a valve device for making carbureted air bycharging atmospherio air with petrol or other volatile hydrocarbons andthe'said device consists of a carbureter through which air is forcedunder pressure and from which the mixture produced is taken directlyinto the service pipes and without the medium of a gas storage tank, theobject of our invention being an improved valve device whereby thepredetermined proportion of petrol is automatically governed by the takeoff of the mixture and whereby the air and petrol or other volatilehydrocarbon is mixed in predeterfmined and approved proportions andirrespective of the amount of the take ofl of the mixture.

The construction and use of our device will now'be explained with theaid of the attached drawing in whichT- Figure 1 shows a vertical sectionwhile Fig. 2 is a detail elevation of the slotted bell.

In said drawing ais the valve casing or chamber having the concentricwell a? for holding the mercury or other sealing agent and into whichdips the inverted and floating bell b having the peripheral mixture exitslots b of any number andas clearly seen in Fig. 2. This bell has theguide rod .7) working in the bracket 12 secured to the casing a asshown. To this casing a at its top is connected the mixture take awaypipe 6*. This floating bell carries a down tube 0 and which isoperatively connected thereto by the lazy tongs movement a working onits fixed pivot 0 In this tube is formed the petrol inlet port 0 andsaid tube dips into a body of mercury d contained at the bottom of thecentral chamber d and said chamber is made integral with the valve casea. The tube 0 telescopes down and around another and inner tube 0 whichis rigidly held in the chamber 03 This tube terminates in a drip pointas e from whence the petrol falls into Specification of Letters Patent.

Application filed April 10, .911.

Serial No. 620,152.

the carbureting chamber 6 shown broken away in the drawlng.

The valve chamber a carries a bracket f having a split or spring eye fand in which by the screw f is adjustably held the petrol float chamber9. By means of this adjustment bracket the vertical position of thepetrol float chamber is regulated so as to govern the height of thepetrol g in its chamber (Z of the casing a, and to said chamber d thepetrol is fed by the pipes g from the float chamber g which latterchamher is supplied by the. pipe 9 from the petrol tank not shown. Thecasing is provided withthe pipes as j and 7' whose function isrespectively to maintain an equilibrium of pressure within the valvechamber, the float chamber 9 and the petrol tank. The valve chamber isfurther provided with the pipes 70 and 70 through which the mercury as(Z anola. is introduced into their own chambers and these pipes furtheract as scour out passages and are furnished with suitable pet cocks.

The action of the appliance is automatic and is asfollows. In thedrawing the bell b is shown in its lower position and the petrol inletport 0 exposed and which posit-ions PatentedMay "z, 1912.

are maintained as long as there is notake off of mixture through pipe 6.such take off occurs the pressure beneath the bell b operates and causesthe bell to rise and thereby exposing the needful area of the exit slots6 thus permitting the mixture to pass through and into the upper portionof the chamber a and out by the pipe 12 The rise of the bell by means ofthe lazy tongs movement 0 depresses the tube 0 so causing the petrolinlet port 0 tobecome immersed in the petrol g and thus allowing saidpetrol to flow int.o.tl1e tube 0 and from thence down into the petroldischarge tube 0 from whence it issues at the drip point 6 into thecarbureti'ng chamber 0 In this latter chamber the petrol meets theincoming air and wherebya gaseous mixture of a fixed qualityis'generated. This newly madegaseous mixture proceeds upward through thechamber a and so through the now exposed exit slots 6 of the now raisedbell I) end so to the service pipe I). The quality of the mixture isgoverned by the propor- As soon as tionate areas of the exit slots andthe petrol inlet port It is apparent that the greater the consumption ofthe mixture the higher the bell will rise and consequently the deeperthe immersion of the petrol inlet. port 0 Within the petrol g andthereby increasing the feed of the petrol to the carbureting cham berand all in proportion with the take of? of the gaseous mixture throughpipe I By therise or fall of the floating bell consequent on the demandfor gaseous mixture it is obvious that the exit slots 6 and petrolinletport 0 will respectively become exposed or immersed to the proportionateextent so governing the discharge of petrol at e to the carburetingchamber e The mercury d seals the petrol g and prevents it fromascending at the lower end of the tube 0. As soon as the consumption ofmixture ceases the bell falls to zero as in the drawing so raising thebell and exposing the petrol port 0 and so shutting oi? the feed of thepetrol from pipee-ek What We claim as our invention and desire to secureby Letters Patent is 1. A carbureter comprising in combination a casinghaving a carbureting chamber adapted to receive a supply of air, achambeer to contaln a body of the liquid to be VOlatihzed and alsohaving an exit for the mixture, said casing also having an annularchamber containing a sealing liquid, a bell for controlling theoperation of the--latt er' by the movements of the former.

2. A carburetor comprising in combination a casing provided with an exitand having a carbureting chamber adapted to re ceive a supply of air andalso chambers con taining bodies of sealing liquid, one of said chambersalso containing a body of the liquid to be volatilized, a bell floatingin the sealing liquid in one of said chambers and subject to thepressure of the mixture at saide'xit, a tube operative in the sealingliquidand also the liquid to be volatilized in the other chamber andembodying means ator controlling the supply of liquid to be volatilizedin said carbureting chamber, and an operative connection between saidbell and tube for depressing the latter to establish a supply of liquidto be" volatilized when said bell rises.

3. A carburetor comprising in combina, tion a casing provided with anexit and also having chambers therein containing bodies of sealingliquid, one of said chambers also containing a body of the liquid to bevolatiliz ed, a carbureting chamber in said casing adapted to receive asupply of air, a bell floating in the sealing liquid in one of saidchambers and subject to the pressure of the mixture at said exit, saidbell also having exit j ports therein for the passage therethrough ofthe mixture from the carbureting chamber, a tube operative in thesealing liquid and also the liquid to be volatilized in the otherchamber and embodying means for controlling the supply thereto of liquidto be volatilized in said carbureting chamber, and an operativeconnection between said bell and tube for causing predetermined relativemovements thereof in reverse directions.

4. A carbureter comprising in combination a casing provided with an exitfor the mixture and also having chambers therein containing bodies ofsealing liquid, one of said chambers also containing a body of theliquid to be volatilized, a carbureting chamber in said casing adaptedto receive a sup ply of air, a bell operative in one of said chambersand subject to the pressure of the mixture at said exit, said bell alsohaving exit ports for the passage of the mixture from the carburetingchamber, a tube operative in the other chamber and embodying means forcontrolling the supply of the liquid to be volatilized in saidcarbureting chamber, and a lazy tong connection between said bell andtube for causing predetermined relative -movements of said ele ments inreverse directions.

5. A'carbureter comprising in combination a casing provided with an exitfor the mixture and also having chambers therein containing bodies ofsealing liquid, one of said chambers also containing a body of theliquid to be volatilized, said casing having a carbureting space adaptedto receive a supply of air, a bell operative in one of said chambers andsubject to the pressure of the mixture at said exit, a tube operative inthe other chamber and embodying means for controlling the supply of theliquid to be Volatilized to said carbureting space, and a pipe leadinginto said tube for conducting therefrom the liquid to be volatilized 6.A carbureter comprising in combination a casing having a carburetingchamber adapted to receive a supply of air, said casing being alsoprovided with an exit for the mixture and a chamber to contain a body ofthe liquid to bevolatilized, a liquid-contaming annular chamber beingalso formed in the casing, a bell operative in the liquid of saidannular chamber and having exit ports for the passage of the mixturetherethrough, said bell being subject to the pressure of the mixture atsaid exiteud the exit ports in the bell being controlled bythe set ourhands in presence of two subscribliquid in which the bell operates, avalve for ing witnesses.

controlling the flow of liquid to be volatil- JACOB KATTHIAS LOFTHOUSE.ized to said c'arbureting chamber, and means EMILY ROSALIE BOOTY.

5 for maintaining said liquid inthe carbu- Witnesses:

reter casing at a predetermined level. RICHARD SPARROW,

In testimony whereof we have hereunto VICTOR DEVERELL.

